Board Feet Formula:
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Definition: This calculator converts linear feet measurements to board feet, which is a standard measurement for lumber volume.
Purpose: It helps woodworkers, carpenters, and construction professionals accurately estimate lumber requirements for projects.
The calculator uses the formula:
Where:
Explanation: The formula accounts for all three dimensions of the lumber to calculate its volume in board feet (1 board foot = 144 cubic inches).
Details: Board feet is the standard measurement for buying and selling lumber. Accurate calculations prevent material shortages or over-purchasing.
Tips: Enter the length in linear feet, thickness in inches, and width in inches. All values must be > 0. The calculator will output the equivalent board feet.
Q1: What exactly is a board foot?
A: One board foot equals 1 foot long × 1 foot wide × 1 inch thick (or equivalent volume).
Q2: Why divide by 12 in the formula?
A: Because 1 board foot is 144 cubic inches (12" × 12" × 1"), and we're working with linear feet (12 inches).
Q3: How do I measure thickness and width?
A: Measure in inches at the thickest and widest points for rough lumber, or nominal dimensions for dressed lumber.
Q4: Does this work for all wood types?
A: Yes, the calculation is volume-based and works for any wood species.
Q5: How do I account for waste?
A: Add 10-20% to your total board feet calculation to account for cutting waste and defects.